Sprinted into international court for lecture (8)
I believe the answer is:
harangue
'for lecture' is the definition.
(I've seen this before)
'sprinted into international court' is the wordplay.
'sprinted' becomes 'ran' (I've seen this before).
'into' indicates putting letters inside.
'international court' becomes 'hague' (I can't justify this - if you can you should believe this answer much more).
'ran' going into 'hague' is 'HARANGUE'.
Can you help me to learn more?
(Other definitions for harangue that I've seen before include "Lengthy and aggressive speech" , "Tirade, diatribe" , "urgent words" , "Exhortation" , "A lengthy speech or scolding" .)